No More Gels - Page 6

Sweet PotatoesApproximately $1.50 per pound

Not only do sweet potatoes pack your daily dose of Vitamin A, the purple-fleshed variety have important antioxidant and anti-inflammatory properties, which, combined with starchy carbs, make them an ideal endurance fuel.

We sliced sweet potatoes one-inch thick and roasted them with cinnamon and salt the night before a long run, cooled them in the fridge overnight and enjoyed rounds from a plastic baggie every 30 minutes or so during a long run. To make them softer, boil them and cut them into cubes like Zeke Tiernan, an elite ultraunner in Basalt, Colorado, does.